Hydrogen And Its Compounds

Which one of the following is correct order of given isotopes?

I. T₂ > D₂ > P₂ (order of boiling point)

II. T₂ > D₂ > P₂ (order of bond energy)

III. T₂ = D₂ = P₂ (order of bond length)

IV. T₂ < D₂ < P₂ (order of reactivity with Cl₂)